Wtre-eeeding means fob coiling



Sept. 9, 1924.

B. L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, BEHDIHG, OR OTHER WIRE FORMING MEANS flied Feb.

1923 15 Sheets-Sheet L mww M m V) QQ Sept. 9 1924. 1,507,871

B. L. VAN ORMAN WIRE FEEDING MEANS FUR COILING, BENDING, OR OTHER WIRE FORMING MEANS Filed F b. 3. IQES 5 Sheets-Sheet Z 73 70 ail- 7y I g \NVENTOR Ber L. I an Orman L mx ATTORNEYS.

Sept. 9 1924. 1,507,871

8 L. VAN ORMAN WIRE FEEDIHGMEANS FOR BOILING, BENDING, OR OTHER WIRE FORMING MEANS Filed Feb. 5, 1923 15 Sheets-Sheet 5 INVENTOR Ber? L Van 0mm)? ATTORNEYS Sept. 9 1924.

B. L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, SENDING, OR OTHER WIRE FORMING MEANS Filed Feb. 5, 1923 15 Sheets-Sheet 4 mvsmore Bert L. Van Orman Q ATTORNEY- Sept. 9 1924.

B. L. VAN ORMAN ANS F COILING, SENDING, OR OTHER WIRE FORMING MEANS WIRE FEEDiNG En? Filed Feb. 5, 1923 15 Sheets-Sheet 5 INVENTOR. Ben L. Van Ormcm A TTORNEYS' Sept. 9 1924. 1,507,871 5. L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, BINDING, OR YB-18R WIRE FORMING MEANS Sept. 9, 1924. 1501871 B. L. VAN ORMAN r WIRE FEEDING MEAN FOR COILING, SENDING, OR OTHER WIRE FORMING MEANS Fllld Fab. 5. 1923 15 Sheets-Sheet F'Ig. XIZZZ l nvz/m'mk.

' 58/"? L. Van Orman A TTORNEYS Sept. 9 1924. 1,507,871

d a. 1.. VAN QRMAN WIRE FEEDING MEANS FOR COILJHC BINDING, OR OTHER WIRE FORMING MEANS rma rib. s. 1923 1 s Sheets-Shut a 9 Ii Him. H l

154 F: .XZX

14 M ,"A, i 1 Q1 pi r Wm 7 7. V A. I m I. l 9

mmvroza FIQXEHZ Bert L. Van Orman A TTORNEY-S Sept. 9, 1924.

' B. L. VAN QRMAN WIRE FEEDING MEANS FOR COILJHG BBHDING, OR OTHER WIRE FORMING MEANS F1116 Feb. 3. 1923 15 Sheets-Sheet 9 mum Sept. 9', 924. 1,507,871

,I. L. VAN ORMAN WIRE FBBDI NG MEANS FOR COILING, .BENDING, OR OTHER WIRE FORMING MEAES Filed Feb. 1923 15 Sheets-Sheet 10 III III INVENTOR. bar? A. Van Ormam ZQKWKMK A TTORNEYS Sept. 9 1924. 1,507,871

8. L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, BBNDING, OR OTHER WIRE FORMING MEANS i'illd Fab. 3. 1923 15 Sheets-Sheet x 1 164 v H 217 S 9: 224 II Sr; ii 226 1 v aw 2L 282 2 71 F'IgXXZY Q2 M Z37 2 y 268 240 60 2V5 2 264 2 7 2 a a U. V f 1: 261 244 26.! 260 236 2:1 252 r i \a W 266 v 276 migqlgq s 258 1% Q- 240 27 257 g r 7 i7 244 as? v a 237 Fig. INVENTOR.

236 Ber? L. Mm Orman 24.3 B.):{ ATTORNEY-S Sept. 9 1924. 1,507,871

8. L. VAN ORMAN WIRE FEEDING MEANS FOR BOILING, BENDING, OR OTHER WIRE FORMING MEANS mm Feb. 3. 1923 15 Sheets-Sheet 12 INVENTOR. Ber? 1.. Km Orman A TTORNEYS Sept. 9, 1924.

B. L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, BINDING, GR OTHER WIRE FORMING MEANS m m M u a W m M m m r pm W 0 n s I n M :l- .l- G S W! w A 4? E H 1 5 a a h v 2 L. w m n d 1 F Sept. 9 1924.

I s; L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, BENDIHG, OR OTHER WIRE FORMING MEANS Filed Fab. 3. 1923 15 Sheets-Sheet 14' INVENTOR. L. Km Orman Z5'erl BY A TTURNEYJ Sept. 9, 1924. 1,507,871

B. L. VAN ORMAN WIRE FEEDING MEANS FOR COILING, BINDING, OR OTHER WIRE FORMING MEANS Filed Feb. s. 1923 15 sheets-sheet l5 mmvroa Bert L. Van Oman A TTORNEYS Patented Sept. 9, 1924.

UNITED STATES AN, ASSIGNOR Tu OIT, MICHIGAN.

PATENT OFFICE.

nmw r. VAN QRMAN, or DETROIT. Mxcmo mo, or DETR 11- A. YOUNG INDUSTRIES,

Application filed February 3, 1928. Serial No. 616,652.

T a all whom it may concern.

Be it known that I Bnirr L. VAN ORMAN, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented certain new and useful Improvements in W'ireFceding Means for Coiling, Bending, or Other lVire-Forming Means, of which the following is a speci fication.

This invention means for coiling, forming means.

relates to wire feeding bending or other wire mattresses, and the like. The construction and operation of this machine is fully described in my co-pending applications Serial No. 474,899, filed- June 2, 1921'and Serial No. 574.846, filed July 13, 1922.

The main objects of this invention are: irst, to provide means of supplying wire intermittently at regular predetermined intervals, to wire forming mechanism.

Second, to provide adjusting means whereby the amount of wire supplied during each cycle of operation may be regulated.

Third, to provide means of preventing backlash or retrograde movement of the wire during the idle period of the forming mechanism when the wire is released from the feeding means.

Fourth, to provide moans stock bale or coil of wire? in propriate to permit the b uncoil in accordance wit of the forming mechanism of holding a a manner aple to revolve and the requirements t'the coils of wire tee of the wire between the supply bale and the forming device.

Sixth to govern the rotation of the stock hair to prevent excessive supply of Wire, and to provide means of compensating for differences between the nearly constant rotation of the bale and the intermittent motion of the wire in the forming mechanism, thereby maintaining substantially an even tension in the Wire.

Seventh, to provide means of automatically disconnecting the machine from its source of power when abnormal stress is amount of time supply the forming supply of wire upon con'iplishin this result including power driven mec anism for bringing a bale of wire mto operative position and means of exhausted.

Ninth, to provide means of automatically disconnecting power from the hale transferring mecianism when any interruption in the operation of the latter occurs that might cause injury to the machine.

Tenth, to so construct the various parts that the will withstand considerable wear and continue in operation with a amount of attention and to provide ease of adjustment and accessibility of parts.

Further objects and objects relating to construction are disclosed in the drawings forming a part of these specifications, in which:

Fig. I, Sheet 1, is a general plan view of a spring coiling vention.

Fig. II, Sheet 2, is a fragmentaly view, partly in elevation and partly in section on a line corres onding to line 2-2 of Fi I.

Fig. III, sheet in section on a line 3-3 of Fig. II, showing details of feeding rolls with driving and automatic controlling means there-for.

Fig. IV, Sheet 3, is a detail view mainly in section on 4-4 of Fig. III.

Fig. V, Sheet 3, is an enlarged fragmentary View partially in section on a line corresponding to line 5-5 of Fig. IV, showing details of the feed mechanism. r

Fig. VI, Sheet 3, is a detail perspective view of the adjpstable actuating cam in disassembled relation. Fig. VII, Sheet mentary view of a trating details of means.

Fig. VIII, Sheet 2, is an enlarged fragwire feed 3. is a fragmentary view controlling in section on a line corresponding to line portion of Fig. II, illus- Ie; the means of acmachine embodying my in a line corresponding to line 8-8 of Fig. VII, showing further details of controllin eans.

Fig. I Sheet 2, is an enlarged detail view main in section on a line correspondin to line. -9 of Fig. VIII.

' ig. X, heet 2, is a detail view in section on a line corresponding to line 10-10 of Fig. VIIi, of an automatic circuit closing means a uated by the failure of wire supply.

1g. XI, Sheet 4, is an enlarged fra mentary plan view of the wire coiling mec ianism and wire guides.

Fig. XII, Sheet; 4, is an enlarged detail .view of one of the wire guides.

' Fig. XIII, Sheet 4, is a detail section on a line corresponding to line 13-13 of Fig.

XII. i

Fig. XIV, Sheeltd, is a detail view of the final wire ide partmlly in section on a line correspon in to line 1,-14 of Fig. XI.

Fig. XV, heet 5, is fragmentary view partly in side elevation, partly in section and partly diagrammatic, showing the assembled relation of parts of wire feed governing mechanism.

Fig. XVI, Sheet 6, is 'a'fragmentary elevation of wire bale holding reels, the reel governing meansand mechanism for automatically changing the positions of the reels.

. ig. XVII, Sheet 7, is an enlarged fragmentary view partially in vertical sectibn on a line corresponding to line 17-17 of Fi I, illustrating details of the wire bale hoFiin reels with automatic cover locking mechanism. 1

Fig. XVIII, Sheet 8, is a fragmentary view similar to Fig. XVII, but with the cover unlocked.

Fig. XIX, Sheet 8, is an enlarged detail plan view of a. wire bale holding reel with cover removed.

Fig. XX, Sheet 9, is an enlarged fragmentary elevation, taken from the right of Fig. 1, illustrating details of the reel hrnkingr mechanism and reel support.

ig. XXI, Sheet 10, is an enlarged detail view of parts of the reel braking mechanism in horizontal section on a. line corresponding to line 21-21 of Fig. XX.

Fig. XXII, Sheet 10, is a vertical section on a line corresponding to line 22-22 of Fig. XXI.

Fig. XXIII, Sheet 10, is a detail elevation of the brake actuating cam and roller, taken from a line corresponding to line 23-23 of Fig. XX.

Fig. XXIV, Sheet 11, is an enlarged detail view partially in section on a. line corresponding to line 24-24 of Fig. XVI,

showingfurther details of the mechanism for swinging the double reel holder and means of automatically throwing the swinging mechanism into action.

Fig. XXV, Sheet 12, is an enlarged fragmentary view partially in section on a line correspondin to line 25-25 of Fig. XVI.

Fig. XXV Sheet 12, is an enlarged detail view partially in section on a line correspondin to line 26-26 of Fig. XXV, showin etails of the first wire guide.

Fig. I XVII, Sheet 12, is a detail view, partially diagrammatic and partially in section on a line corresponding to line 27-27 of Fig. XXV.

Fig. XXVIII, Sheet 12, is a detail vertical section on a line corresponding to line 28-28 of Fig. XXVII.

Fig. XXIX, Sheet 13, is an enlarged detail view partially in vertical section on a line corresponding to line 29-29 of Fig. XVI. illustrating means for automatically throwing the reel changing mechanism into action.

Fig. XXX, Sheet 13. is a view similar to Fig. XXIX, but with control parts in actir ated position.

Fig. XXXI, Sheet 6, is an enlarged vertical section on a line corresponding to line 31-31 of Fig. XXX, showing details of a locking dog for holding partsin actuated position.

Fig. XXXII, Sheet 13, is an enlarged detail view of a pneumatic shock absorber, partially in section on a line corresponding to line 32-32 of Fig. XVI.

Fig. XXXIII, Sheet 14, is a fragmentary View in section on lines corresponding to lines 33-33 of Fig. XX, illustrating mechanism for rotating the reel holder.

Fig. XXXIV, Sheet 14, is an enlar ed detail view partially in section on a me corresponding to line 34-34 of Fig. XXXIII, illustrating details of reel support driving mechanism. 1

Fig. XXXV, Sheet 11, is a detail section on a line corresponding to line 35-35 of Fig. XXXIV.

Fig. XXXVI, Sheet 14, is a View similar to Fig. XXXIV, with a clntch dog in engaging position.

Fig. XXXVII, Sheet 14, is a detail sec tion on a line corresponding to line 37-37 of Fig. XXXIV.

Fig. XXXVIII, Sheet 11, is a detail view in section on line 38-38 of Fig. XXXVII, showing the clutch dog in released position.

Fig. XXXIX, Sheet 11. is a detail view similar to Fig. XXXV with parts in another position.

Fig. XXXX, Sheet 11, is a detail view in section on a line corresponding to line 40-40 of Fig. XXXIX.

Fig. XXXXI, Sheet 14, is a detail view of a universal coupling employed in section on a line corresponding to line 41-41 of Fig. XXXIV.

Fig. XXXXII, Sheet 5, is a modification is).

of parts shown in Fig. XV, illustrating memover:

chanical means of the machine.

Fi XXXXIIL Sheet 15. is a conveo tiona ized view showing a modified form of wire feed governor.

In the drawing similar reference charao ters refer to similar parts throughout the several views and the sectional views are taken looking in the direction of the little arrows at the ends of the sectional lines.

Referring to the drawing, the operation of the machine which as stated, is adapted for the making of coiled springs for use in upholstery, mattresses and the like. is in general as follows:

The Wire is drawn from a stoclt halo 1, carried by a reel ee Fig. I), through suitable guides 3 and -l to a tension arm which is pivoted at 6 and yieldingly sup ported by means of the coil spring 7. From the tension arm, the Wire passes to the feed rollers 8 by which it is driven to the roiling mechanism designated generally by the numoral 9. After coiling the spring is carried to the first knotter designated generally by the numeral 10, by means of a reciprocating arm II. This first. knotter forms the bottom knot of the spring which is then transferred by the swinging transfer arm 12 to the gaugin and positioning device designated genera ly by the numeral 13. The spring is transferred from this positioning and gauging device to the second knotter, designated generally by the numeral 14, by the transfer arm 15, which inverts the spring during its transfer, bringing the other end into co-acting relation to the secnd knotter. After the operation of this knotter 14 on the spring, the spring is ejected from the machine by means of a rotating ejector 16. Operation of the knotter and transferring means is shown and described in detail in my applications for Letters Patent hereinbefore referred to.

The several mechanisms being illustrated and their operating means and connections being described in these applications, I deem it unnecessary to illustrate and. describe such details herein further than they have directly to do with my present invention.

Power from any suitable source is recuiv'ed by a pulley l? which is arranged to be operatively connected to a driven gear 18 by suitable transmission enclosed within the.pulle v. Since the construction and operation of this power transmitting means is described in detail in my co-pending appli-- cation, Serial No. 595.995, filed ()ct. 9!,"i922, I deem itsutlicient in my present embodi ment to give a general description and to illustrate and describe means of controlling the change speed mechanism.

A driven shaft 19 which carries the driven gear 18 Fig. III) extends through the mechanism and a supporting bearing 20, and

automatically stopping carries a hand wheel on its outer and. By menus the wheel the machine may lie slowly turned over l'kj hand in sell ing up and limiting adjustments. The driven shall if? iurnis :1 support, for the gen and clutches which constitute the change speed llfllIiSllllS- sion. A cone :32 recipiuicatalilv mounted on the shaft 19 may be moved by a yoke 23 into or out of engagement with rolle carried by levels 231 which are so arranged to be capable of causing: frictional engagement hetueen the driving: and the driven parts. When the yoke moved -inwardl v. the levers are e untied. thereby frictionally locking all of the trursmi ion parts t ig-ether as a unit and (.EUESIIlfi the driven gear to rotate at th unic s eerl of the driving pulley 17. Mo; merit of the cone 22 outwardly a suitable distance releases the frictional engagement of the parts and allows the driving members to revolve idly While the driven shaft 19 :inll gear 18 remain stationary. ll'lovemcnt or the yoke and cone 2?. may be controlled by i lide bar 26 reciprocatahlv mounted. above the trziuismission and operatively connected to the yoke 23 by a pin 55? engaging openings in the sides of the bar 26. The bar 52'; is manually actuated by a hand lcverQS pivoted at 29 and connected with the bar 26 by a link 30; After the yoke :23 has been moved far enough to neutralize the transmission, continued outward movement of the bar 26 contracts brake shoes 31 upon a. suitable drum 32 thereby holding certain gears sta- 1 tiouary and causing the driven gear 1'? to be rotated at half the speed of the pulley 1?. In F gs. I, Ill, and XV are illustrated means of auon'iatically throwing out the yoke 23 to'neutralize the transmission and stop the machine A roller B l, reciproeatably mounted upon the upwardly extending portion of the'y'oke 23, is normally held to lts upward. limit by springs 35 which are carried by a yoke 36 and are in compression between the collars-37 and bosses 38 on the shifting yoke 23. The yoke 38 has a horizontal upper portion engaging a. groove in the roller 34 and downwardly extending arms reciprocatable in guides: Fif in the cone 1 shifting yoke 23 An electronuignet ll mounted on a stationary part of the machine in operative relation to an armature ll carried by the yoke 36. When the electro magnet is energized by passageof an elecl tricul current. through it, the yoke 36 is caused to pull the roller 34 downward and into range of a fare cam 42 carried by the pulley 17; If this action occurs while the yoke 23 is, in a position to hold the trans mission in highspeed, the yoke "33 is thrown into neutral position by the cam 42 Within the first revolution of the pulley, thereby immediately disconnecting power from the th s chine. This automatic stopping device is n l J l?! A Ill w ich co-operates with a spreader The coiler block 46 is oscillated about a' Lvaluable safety measure which may be center 48 by a rock arm 49 which is actuated through a connecting link 50 by a cam lever 51 and cam 52. In forming the coil, the. wire 45 under-runs a fixed bar 53 and over-runs a cutter bar 54, which is pivoted at 55 and adapted to be swung upwardly across the shearin face of the bar 53 by ta )pcts 56 and 57 w iich are prOJected upward y a lever 58 pivoted at 59 and ac.- tuated by a cam 60 (see Fig. 11). Return movement of tho'cutting bar is efl'e'cted by pressure from a rock lever 6i actuated by a compression spring 62. This cutting device acts to sever each formed spring from the unformed stock.

After each spring is formed, it is desirable that the movement of the wire be stopped for a period of time sufiicient to allow the coiled spring to be severed and removed from the coiling mechanism. This requires an intermittent wire feedin action which is accomplished by the followin means: Wire from the driven gear 18 through suitable] cars 67, 68 and 69 (see Figs. III and IV).&

he upper rollers 8" are carried by a beard ing member 70 which is pivoted to the mai frame by 'ns 71. By rocking the bearmp member 70 n the pivots 71, the upper rol ers may be lifted out of feeding engagemen with the w re whenever it is desired stop the fee ingof wire to the (roller. The n per roll are driven through gears 72 which are mesh with the gears 69 of the lower rolle s. The amount of lift required to release e feed on the wire is so slight that the gears 72 are not lifted out of roper drivingrelation with the gears 9 far enou h to affect the rotation of the rollers 8" w ich are running idle during this interval. The bearings are so spaced as to brin the gears into correct mesh while the iced rollers are at work. The upper rollers 8 are held in operative relation with the lower rollers during their working period by a clamping lever 7 3 pivoted to the main frame at 74 and exerting ressure upon the bearing member 70 throug an adjustingscrew 75 which is locked in set osition by a hand wheel or look nut 76. removable bearin surface, as for instance, the hardened pin 5 is preferably inter osed between the adjusting screw and the earing member 70. The clamping lever 73 is connectedby an adjustable link 77 to a cam lever 78 which carries rollers 79 and 80, en-

gaging a cam indicated in general by the numeral 81 (see Figs. IV, V and VI). A sprin 82 which is held in position b a cylin rical keeper 83 supported by a her 84, is in compression between the lower hearing member 66 and the upper bearing member 70. \Vhenever pressure from the clamping lever is released, expansion of the spring 82 lifts the upper feed rollers out of operative engagement with the lower rollers. This arrangement enables the cam '81 to control the amount of wire used in the coil and to time the movement of wire in correct relation to the action of the coiler parts.

In order to avoid the necessity of providing a separate cdm for each type of spring manufactured by the machine, I have designed the feed control cam 81 in such a way that the length of dwell may be varied to meet any feeding requirements. As em bodied herein this cam 81 consists of two spaced cam members 85 and 90 (see'Figs. I I, IV, V and VI) each cam member operatively engagin one of the rollers carried by the ever 8. The cam member 85 is fixed to a drive shaft 86 as b the pin 87, and has a collar portion 88 wit a shoulder 89 formed to receive the other ring like cam member 90. The cam member 90 is hel in frictional engagement with its comanon cam member 85 by a clamping block 1 resting in a slot 92 in the shaft 86, the

clam ing block being pressed against the carp y a set screw 93 and interposed rod 9 i lying in an axial bore of the shaft 86. B oosening the set screw the cam member 9 :may be turned to any position relative to the fixed cam member 85. Since the cam lever 78 is held in actuated position whenever either of its rollers 7 9 or is in contact with a workin portion of the corresponding cam meni ber, the feed rollers 8 are held in operative engagement from the time. that the lever 78 is actuated by one cam member until it is released by the other cam member. For instance, the feeding of 7 Clutch bloc wire to the coiler begins when cam member first engages roller 79 and stops when member goes out of engagement with roller 80. By shifting one member in'rclation to the other, the cam 81 may be set to meet the feeding requirements of any type of spring that th coiler can form. It is desirable to mark the member 88 with a graduated scale (see Figs. V and VI) and the adjacent surface of member 90 with a line to serve as a guide when making adjustment.

The action of the feed rollers 8 draws the wire'from the reel through the guides 3 and 4, guide bushing and over rollers 96, carried by the tension arm 5. and around a guide roller 96' to an arresting device 97 supported by the guide member 98. The arresting device (see Figs. II, VII, VIII, IX) prevents backlash or retrograde movement of the wire 45 during the interval of time that wire is released by the feed rollers 8. The device consists of a bracket 97' su portin suitable guide members 99 througi whic the wire passes. A bell crank clutch lever 100 pivoted at 101 in the bracket 97' is so disposed as to be forced by a compression spring 102 against the wire at such an angle that the wire is firmly gri pad or clutched between the clutch lever and the u per end of a relativel fixed 103 which is adjustaby suppayed by a set screw 104 and lock nut 105.

enever the feed actuating lever 73 is pulled downward to bring the feed rollers 8 into action, a tappet 106 adjust-ably mounted upon the lever and having an inclined edge 107, engages the upper end of the clutch lever 100 and forces the lower end against the action of the sp-rin 102 thereby releasing the hold on the wire 5 (see dotted outline in Fig. IX). Since the grippin action of this arresting device is controlle by movement of the feed actuating lever 73, the wire is free to pass through the guides whenever the feed rollers 8 are in action, but is held firmly by the clutch whenever released by the feed rollers. The clutch lever 100 is shown as being constructed with. duplicate end portions in order that it ma be inverted to resent a new surface to t e wire when one nd has become worn.

The wire is sup orted-and guided between the pairs of feed rollers by a i do c0nsisting of bushings 109 carried b a suitable bracket 110. Upon leaving the ast pair of feed rollers, the wire passes throu h the guide member 63 (see Figs. XII and XIII) which is especially designed for accessibility and consists of a stationary block 112, carrying a hardened insert 113, and a movsection 114: which is pivoted at 115 and c amped into closed position by a suitable lever 116. The pivoted section 114 also holds a hardened insert 11?, the position of which is adjustable by means of adjusting screws 11% and set screws 119. By swingingthe movable section 114 to open position (see dotted outline in Fig. XIII) ready access may be had for inspection, for initially en tering the wire and for removing the short piece of wire left after exhaustion of the l re final guide (A (see Fig. XIV) consists of a bushing 121. adjust-ably secured in the head 122 of a stud 123 which is rotatably adjustable in the main frame, being held in )osition by a set screw 12 1. Aecurate adjustment of this guide is essential as the guide bears the reaction from the pressure of the coils! block and cooperates with the latter when coiling springs. As an adjunct to the accessible feature of the guide member 63, the bushing 121 of the guide member 6-1 is preferably left open on top so that when the supply of wire becomes exhausted the guide member 63 may be opened and the wire readily removed from both final guides. Since the guide member 03 supports the wire to a point near thejguide 01 and upon leaving the latter, the wire passes underneath the upper cutting bar 53, there is no tendency for the wire to leave the bushing 121 during the coiling process.

When the supply of wire becomes exboosted, the machine is stopped by the following means:

A. ro-ller124 is carried by a rock arm 125 secured to a shaft 126 journaled in bearings 127 on the main frame (see Fig. VII). An electrical contact member 122; also secured to the shaft 126 in insulated relation thereto (see Fig. X) is in circuit with a generator 129 or other source of current and the electro-magnet 40 of the automatic stopping mechanism (see Fig. XV). The roller 124 rests upon the wire 45 at a point near the feed rollers 8 so that the wire normail Y holds up the rock arm 125 and likewise l10lt s the contact 128 away from the ground con tact "130 (see Fi s. 11, VII, VIII and x Exhaustion of t 1e wire allows the roller 12a to fall and the member 128 to ground on the contact 130 thereby completing the electrical circuit 132 and causing the electromag et to be energized and the machine to be stopped. V,

- The reel 2 which carries the stock bale 1 or delivery of wire to the coiler or other forming means consists of acircular base plate 134, (see Figs. XVII, XVIII XIX) which is rotatable on a spindle 135 and to which is attached a series of radially disposed supporting arms 136. These supporting arms are downwardly curved so. that an irregular bale or coil of wire may rest and center itself therein in relation to the axis of rotation. The outer ends of the 

